Types of heat-resistant automotive sealants and which ones to choose
Using a heat-resistant automotive sealant helps make automotive repairs successful. With the help of this substance it is possible to cope with various leaks and cracks. Today, there are many options for such funds on sale. This allows you to choose the right ones, taking into account the existing problems. Compliance with the technology of their application is not negligible.
Varieties and characteristics
The main task of sealants is considered to be the elimination of leaks and cracks. With their help, it is possible to cope with punctures and gaps.There are many such products on sale. At the same time, their purchase should be treated very carefully.To purchase a quality substance, it is recommended to familiarize yourself with its characteristics and composition.
Anaerobic
These sealants are special compounds containing dimethacrylate esters. They are characterized by the possibility of polymerization without the supply of oxygen. Substances acquire a solid consistency when in contact with metal in narrow places where air does not penetrate. If these conditions are not respected, the product will remain in liquid form.
To achieve the polymerization of the composition, it is necessary to tightly connect the elements of the parts. This will help remove oxygen. When entering a metallic space, the substance solidifies within half an hour, becoming a solid polymer.
Silicone
For independent use, it is worth using silicone sealant. The composition is characterized by excellent elasticity and high strength. These substances differ in elasticity and temperature. Sealants polymerize due to humidity in the air.
It takes 10 minutes to cure. During this time, it is recommended to install the item.
Polyurethane
This mastic promotes the adhesion of the different structures. The substance is characterized by excellent adhesion. It is produced in different colors. This helps in choosing the right formulation.
To repair the exhaust system
This system is sensitive to high temperatures. The maximum load is on the muffler. Under the influence of negative factors, the elements of the system are destroyed and burned.
To repair the exhaust system, you must use a heat-resistant sealant. Its use will prevent sticking of pipes and clamps to each other. In this case, the tightness of the joints will be as reliable as possible.Compositions in the form of cement, glue or paste can be used for rounded elements of the exhaust system.
Acrylic
These sealants are a blend of acrylate polymers which are used for interior work. They are often coated with acrylics or varnish. Due to this, it is possible to obtain different shades. Such formulations are impermeable and non-impermeable.
Bituminous mixtures
This term is understood as a pasty substance, which is made on the basis of a modified material with the addition of fillers. Thanks to this, the product acquires resistance to negative factors.
Ceramic
Such products are made on the basis of synthetic components using ceramic components. Due to this, it is possible to increase the strength and resistance of the material to high temperatures.
As a rule, these sealants are used to rebuild the exhaust system with a small gap.
For glass and headlights
When choosing a sealant, you should be guided by the recommendations that are given in the service book. The material from which the headlights are made is not insignificant. For this, glass or polycarbonate is used. It is forbidden to use many compounds to repair polycarbonate, as they lead to its destruction. The color of the adhesive has no effect on its properties.
Types of body fillers by method of application
Today there are many varieties of sealants that differ in the method of application.
Sprayable Moisture Treatment
Typically these include modern polymers. The compositions are made one-component. Substances contain many dry components, therefore they quickly dry in air under the influence of moisture. As a result, a strong seam is formed. A special gun is used to apply the spray sealants.
Brush application
These products are made from silicone and nitro rubber. They are used to seal joints, fix lintels, pallets, seal trunk and wheel arches. The compositions are produced in white, gray or black. It is recommended to apply them with a brush. Drying takes 10 minutes.
sealing tape
Applying a substance to a machine often requires special skills. Otherwise, it will not be possible to make the seam durable. If you don't have the talent, use masking tape. Such mastic does not need to be glued. The material is flexible, which makes it possible to carry out repairs in different places. It is allowed to paint the tape immediately after fixing. You don't need to dry it.
Extruded
These substances are sold in tubes or cartridges. To seal seams and seams, it is recommended to squeeze out the substance by hand or with a gun. When using a pneumatic gun, an even seam will be obtained. Such formulations are suitable for cup seams.
They can be used for the engine compartment. Also, substances are used for the doors and trunk.
Choice criteria
To choose the right composition, a number of criteria should be considered. This will help you get the best quality product.
Properties
First of all, the characteristics of the sealant are important. So, for the repair of the exhaust system, it is worth using heat-resistant substances. They are able to withstand high temperature conditions.
Scope
For a car, it is worth choosing specialized sealants that meet all the requirements.
Trademark
The choice of a brand is not negligible. There are well-known manufacturers that produce high-quality putty.
Place of production
It is also worth paying attention to the place of manufacture. The quality of the substance depends on it.
Distributor Availability
Due to the presence of the dispenser, it is possible to facilitate the application of the required amount of the substance. This can be done as carefully as possible.
Drying period
Depending on the period of drying of the putty, repair work is planned.
Terms of use
Sealants differ in terms of application. This should definitely be taken into account when repairing a car.
Review of popular brands
Today there are many popular types of sealants produced by different manufacturers.
Abro red
The substance is packaged in tubes of 32 grams. It can be used to replace different seals. The composition is considered elastic and tolerates high temperatures well.
Silencer cement
It is a ceramic agent that can be used to repair an exhaust system. The composition prevents gases from seeping through the burnt parts of the pipes.
Ultra BLACK
The substance belongs to the category of silicone mixtures. It is characterized by high elasticity and excellent elasticity after hardening.
Kazan
This tool makes it possible to deal quickly with the leak of technical fluids. The composition provides excellent sealing, takes the desired shape and is resistant to high temperatures.
Dirko HT
This sealant acts quickly. It is used to repair items that are exposed to high temperatures.
Merbenit XS55
This is a high strength sealant that can be used for underbody, hood and other body parts. The substance is characterized by high tensile strength.It is securely attached to metal and plastic.
BODY 999
This product is sold in all automotive stores. It is considered the most common. The composition has a polyurethane base and is used to fill voids. With its help, the welded seams of the car are processed.
3M 08537
It is a polyurethane sealant. It is a one-component compound that is available in black and white.
The tool is versatile.
Terostat 9320
It is a versatile single-component spray. It is made from modern polymers. Solidification of the composition occurs under the influence of air humidity.
Novol Gravit 630
It is a one-component polyurethane compound that is used to seal welded items. The substance helps to achieve a high-strength elastic shell. After a while it does not crack or shrink.
Reoflex Brush Sealer
This agent seals all seams. It is actively used in the repair of the body. The composition provides good sound insulation, is easy to apply and dries quickly.
Bool
It is a polyurethane sealant that is produced in special cartridges for a gun. The composition is used to fix the seams. The composition is sold in white, black and beige tones.
APP PU50
The material is considered single component. It is made from polyurethane. The product has excellent adhesion to metal, glass, plastic. When repairing the body, the composition is used to seal the welded elements.
General application rules
To get a high-quality result, you should follow these recommendations:
- clean the surface before applying the composition;
- to increase adhesion, treat the bases with scotch-bright;
- apply a special metal primer;
- before starting the sealing, carry out the preparatory work - unseal the container, put the cartridge in the gun or open the package with adhesive tape;
- apply the substance to the area of the proposed seam;
- remove excess putty with a spatula;
- if necessary, it is allowed to paint the seam later.
Common Mistakes
When using putty, inexperienced craftsmen make the following mistakes:
- choose the wrong composition of the product;
- incorrectly preparing the surface for treatment with the composition;
- product application rules are neglected.
Additional tips and tricks
First of all, it is worth choosing the right putty. So, to repair the exhaust pipe, you will need a heat-resistant compound.To achieve results in the application of a substance, a number of rules should be followed. A mechanical method is used to clean old seams. For this, it is recommended to remove the layer of material with a sharp spatula or sandpaper. In order not to damage the base, the putty is moistened with white spirit.
After the preparatory work is completed, a new layer of putty is applied. In this case, it is recommended to follow the instructions on the packaging. Automotive sealant is an effective product that is often used for repair work. It is recommended to apply the substance correctly to get the result.